Mass Varying Neutrinos With More Than One Species Of Neutrinos

Details Mass Varying Neutrinos With More Than One Species Of Neutrinos Mass Varying Neutrinos With More Than One Species Of Neutrinos

2009-03-25

arxiv.org/abs/0903.4333v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

7 pages, 1 figure, To appear in the Proceedings from the 4th International Workshop on the Dark Side of the Universe 2008, Cai

Scientific paper

In the context of Mass Varying Neutrinos(MaVaNs) we study a model in which a scalar field is coupled to more than one species of neutrinos with different masses. In general, adiabatic models of non-relativistic MaVaNs are heavily constrained by their stability towards the formation of neutrino nuggets. These constraints also apply to models with more than one neutrino species, and we find that using the lightest neutrino, which is still relativistic, as an explanation for dark energy does not work because of a feedback mechanism from the heavier neutrinos.

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